Junior Backend Developer specializing in Java & Spring Boot.

Interested in backend architecture, concurrency control, and scalable system design.

• Java
• Spring Boot
• Spring Security
• JPA / Hibernate

• MySQL
• Redis
• Docker
• AWS (EC2, RDS)

• GitHub Actions
• IntelliJ IDEA
• Postman

E-commerce backend platform focused on concurrency control, Redis caching, and coupon/time-sale systems.

Tech

• Spring Boot
• Redis
• MySQL
• Docker
• AWS

Backend payment system project with membership, point management, and transaction handling.

Tech

• Spring Boot
• JPA
• MySQL

Multi-server coffee ordering system focused on distributed lock and real-time ranking using Redis and Kafka.

Tech

• Spring Boot
• Redis
• Kafka
• Docker

• Distributed Systems
• Kafka
• Concurrency Control
• Cloud Infrastructure

• Velog: https://velog.io/@jhsky3118/posts
• Backend Portfolio: https://github.com/doksakim7/backend-portfolio